| 上海粘性土剪切带形成的平面应变试验研究 |
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| 引用本文： | 张启辉,李蓓,赵锡宏,董建国. 上海粘性土剪切带形成的平面应变试验研究[J]. 水电自动化与大坝监测, 2000, 24(5): 40-43 |
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| 作者姓名： | 张启辉 李蓓 赵锡宏 董建国 |
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| 作者单位： | 同济大学地下建筑与工程系,上海,200092 |
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| 基金项目： | 国家自然科学基金资助项目!(5 97790 12 ) |
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| 摘 要： | 采用可进行边界变形局部化量测的平面应变仪 ,对上海典型硬粘性土 ( 2层褐黄色粉质粘土、6层暗绿色粉质粘土 )进行平面应变不排水剪切试验 ,研究局部化变形的初始分叉点、剪切带倾角随固结应力 σ3 之间的变化规律 ,评价 Columb和 Roscoe理论对剪切带倾角的预估 ,初步研究了剪切带内的变形机理。
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| 关 键 词： | 平面应变 局部化变形 分叉点 剪切带 |
STUDY ON SHEAR BAND FORMATION IN SHANGHAI CLAY IN PLANE STRAIN COMPRESSION TESTS |
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| Zhang Qihui,Li Bei,Zhao Xihong,Dong Jianguo. STUDY ON SHEAR BAND FORMATION IN SHANGHAI CLAY IN PLANE STRAIN COMPRESSION TESTS[J]. HYDROPOWER AUTOMATION AND DAM MONITORING, 2000, 24(5): 40-43 |
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| Authors: | Zhang Qihui Li Bei Zhao Xihong Dong Jianguo |
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| Abstract: | Plane strain undrained comprssion tests are performed with local deformation measurement devices on typical stiff clays(brown yellow silty clay, dark green silty clay) in Shanghai to determine the bifurcation point, the law of evolution of shear band orientation with the consolidation stress. At the same time, prediction of shear band orientation based on Mohr Column and Roscoe theory is evaluated. The mechanism of deformation inside shear band is studied preliminarily. |
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| Keywords: | plane strain localized deformation bifurcation point shear band |
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